diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c
index 762bd509b71b4008d3cc00d33bf78dc0a1917baf..d8b108737b7260fad72139fcf4e26960ebac41e9 100644
--- a/block/cfq-iosched.c
+++ b/block/cfq-iosched.c
@@ -134,7 +134,7 @@ struct cfq_queue {
/* io prio of this group */
unsigned short ioprio, org_ioprio;
- unsigned short ioprio_class, org_ioprio_class;
+ unsigned short ioprio_class;
pid_t pid;
@@ -2869,7 +2869,6 @@ static void cfq_init_prio_data(struct cfq_queue *cfqq, struct io_context *ioc)
* elevate the priority of this queue
*/
cfqq->org_ioprio = cfqq->ioprio;
- cfqq->org_ioprio_class = cfqq->ioprio_class;
cfq_clear_cfqq_prio_changed(cfqq);
}
@@ -3593,30 +3592,6 @@ static void cfq_completed_request(struct request_queue *q, struct request *rq)
cfq_schedule_dispatch(cfqd);
}
-/*
- * we temporarily boost lower priority queues if they are holding fs exclusive
- * resources. they are boosted to normal prio (CLASS_BE/4)
- */
-static void cfq_prio_boost(struct cfq_queue *cfqq)
-{
- if (has_fs_excl()) {
- /*
- * boost idle prio on transactions that would lock out other
- * users of the filesystem
- */
- if (cfq_class_idle(cfqq))
- cfqq->ioprio_class = IOPRIO_CLASS_BE;
- if (cfqq->ioprio > IOPRIO_NORM)
- cfqq->ioprio = IOPRIO_NORM;
- } else {
- /*
- * unboost the queue (if needed)
- */
- cfqq->ioprio_class = cfqq->org_ioprio_class;
- cfqq->ioprio = cfqq->org_ioprio;
- }
-}
-
static inline int __cfq_may_queue(struct cfq_queue *cfqq)
{
if (cfq_cfqq_wait_request(cfqq) && !cfq_cfqq_must_alloc_slice(cfqq)) {
@@ -3647,7 +3622,6 @@ static int cfq_may_queue(struct request_queue *q, int rw)
cfqq = cic_to_cfqq(cic, rw_is_sync(rw));
if (cfqq) {
cfq_init_prio_data(cfqq, cic->ioc);
- cfq_prio_boost(cfqq);
return __cfq_may_queue(cfqq);
}
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index c5e82ece7c6c7d7afd2002d15c4293a99662bb4c..a159ba5a35e722457f83977bf4a82c1344528fc8 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -678,23 +678,19 @@ struct buffer_chunk {
static void write_chunk(struct buffer_chunk *chunk)
{
int i;
- get_fs_excl();
for (i = 0; i < chunk->nr; i++) {
submit_logged_buffer(chunk->bh[i]);
}
chunk->nr = 0;
- put_fs_excl();
}
static void write_ordered_chunk(struct buffer_chunk *chunk)
{
int i;
- get_fs_excl();
for (i = 0; i < chunk->nr; i++) {
submit_ordered_buffer(chunk->bh[i]);
}
chunk->nr = 0;
- put_fs_excl();
}
static int add_to_chunk(struct buffer_chunk *chunk, struct buffer_head *bh,
@@ -986,8 +982,6 @@ static int flush_commit_list(struct super_block *s,
return 0;
}
- get_fs_excl();
-
/* before we can put our commit blocks on disk, we have to make sure everyone older than
** us is on disk too
*/
@@ -1145,7 +1139,6 @@ static int flush_commit_list(struct super_block *s,
if (retval)
reiserfs_abort(s, retval, "Journal write error in %s",
__func__);
- put_fs_excl();
return retval;
}
@@ -1374,8 +1367,6 @@ static int flush_journal_list(struct super_block *s,
return 0;
}
- get_fs_excl();
-
/* if all the work is already done, get out of here */
if (atomic_read(&(jl->j_nonzerolen)) <= 0 &&
atomic_read(&(jl->j_commit_left)) <= 0) {
@@ -1597,7 +1588,6 @@ static int flush_journal_list(struct super_block *s,
put_journal_list(s, jl);
if (flushall)
mutex_unlock(&journal->j_flush_mutex);
- put_fs_excl();
return err;
}
@@ -3108,7 +3098,6 @@ static int do_journal_begin_r(struct reiserfs_transaction_handle *th,
th->t_trans_id = journal->j_trans_id;
unlock_journal(sb);
INIT_LIST_HEAD(&th->t_list);
- get_fs_excl();
return 0;
out_fail:
@@ -3964,7 +3953,6 @@ static int do_journal_end(struct reiserfs_transaction_handle *th,
flush = flags & FLUSH_ALL;
wait_on_commit = flags & WAIT;
- put_fs_excl();
current->journal_info = th->t_handle_save;
reiserfs_check_lock_depth(sb, "journal end");
if (journal->j_len == 0) {
@@ -4316,4 +4304,3 @@ void reiserfs_abort_journal(struct super_block *sb, int errno)
dump_stack();
#endif
}
-
diff --git a/fs/super.c b/fs/super.c
index ab3d672db0deae0a84a01bc1938cd967cc27e79f..cf12ba50973b8c5c73946f30f10cfbb9a3ee0a97 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -245,13 +245,11 @@ static int grab_super(struct super_block *s) __releases(sb_lock)
*/
void lock_super(struct super_block * sb)
{
- get_fs_excl();
mutex_lock(&sb->s_lock);
}
void unlock_super(struct super_block * sb)
{
- put_fs_excl();
mutex_unlock(&sb->s_lock);
}
@@ -280,7 +278,6 @@ void generic_shutdown_super(struct super_block *sb)
if (sb->s_root) {
shrink_dcache_for_umount(sb);
sync_filesystem(sb);
- get_fs_excl();
sb->s_flags &= ~MS_ACTIVE;
fsnotify_unmount_inodes(&sb->s_inodes);
@@ -295,7 +292,6 @@ void generic_shutdown_super(struct super_block *sb)
"Self-destruct in 5 seconds. Have a nice day...\n",
sb->s_id);
}
- put_fs_excl();
}
spin_lock(&sb_lock);
/* should be initialized for __put_super_and_need_restart() */
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 6e73e2e9ae33c5b7719f11fb303cee693dc1b043..f6c866c287b5e593bbe66dca3da5705ae6c89003 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1453,10 +1453,6 @@ enum {
#define vfs_check_frozen(sb, level) \
wait_event((sb)->s_wait_unfrozen, ((sb)->s_frozen < (level)))
-#define get_fs_excl() atomic_inc(¤t->fs_excl)
-#define put_fs_excl() atomic_dec(¤t->fs_excl)
-#define has_fs_excl() atomic_read(¤t->fs_excl)
-
/*
* until VFS tracks user namespaces for inodes, just make all files
* belong to init_user_ns
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 580f70c02391712f7cc0351d645361b683b82a8b..d14e058aaeedd6e63bafc24aadce24a78127d7a6 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -176,7 +176,6 @@ extern struct cred init_cred;
.alloc_lock = __SPIN_LOCK_UNLOCKED(tsk.alloc_lock), \
.journal_info = NULL, \
.cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
- .fs_excl = ATOMIC_INIT(0), \
.pi_lock = __RAW_SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
.timer_slack_ns = 50000, /* 50 usec default slack */ \
.pids = { \
diff --git a/include/linux/sched.h b/include/linux/sched.h
index a837b20ba190330c23b59ec5a3fb584fc9f6308f..22f54249cde1929a5241fcb50a726ba99b2dd210 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1503,7 +1503,6 @@ struct task_struct {
short il_next;
short pref_node_fork;
#endif
- atomic_t fs_excl; /* holding fs exclusive resources */
struct rcu_head rcu;
/*
diff --git a/kernel/exit.c b/kernel/exit.c
index f2b321bae44037c08d4b09b90b8610a80b979eb7..b412df45ea6cca4ae0d884306950ed9578573982 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -906,7 +906,6 @@ NORET_TYPE void do_exit(long code)
profile_task_exit(tsk);
- WARN_ON(atomic_read(&tsk->fs_excl));
WARN_ON(blk_needs_flush_plug(tsk));
if (unlikely(in_interrupt()))
diff --git a/kernel/fork.c b/kernel/fork.c
index 0276c30401a081132d1e4fadac663f3afdf292c0..30a0e86072230528467f9c652b72c90eb75c82d4 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -291,7 +291,6 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
/* One for us, one for whoever does the "release_task()" (usually parent) */
atomic_set(&tsk->usage,2);
- atomic_set(&tsk->fs_excl, 0);
#ifdef CONFIG_BLK_DEV_IO_TRACE
tsk->btrace_seq = 0;
#endif